Service ride control

Nine times out of ten the problem is a leak in one of the rear air shocks. You get the service light because the system cannot control itself and then times our giving you the service light. I would replace both its not that bad of job here are the diagrams to help you. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed. Cheers

It almost requires the use of a scan tool. For one to read the codes, check data, and perform system functions. If you can at least get a code, there may be some assistance available here.

It would have a relevant fault code stored that would need to be extracted to establish a repair. A scan tool or code reader is necessary, but not all code readers will interface with most vehicle sub-systems.

Test 10-12

Circuit Description
The suspension damper solenoid is driven ON and OFF by the Electronic Suspension Control (ESC) module. To activate the suspension damper solenoid it is initially subjected to full battery voltage for a short period of time. Once the suspension damper solenoid is pulled-in the supply voltage is Pulse Width Modulated (PWM). The amount the suspension damper solenoid valve is activated is based on inputs from the driver Tow/Haul Switch, road inputs, position sensor inputs and the Powertrain Control Module (PCM).

Conditions for Running the DTC
The ESC module performs a test on each suspension damper solenoid during both the ON and OFF states.

Conditions for Setting the DTC

A short to ground in the control circuit of the suspension damper solenoid.
A short to voltage in the control circuit of the suspension damper solenoid.
An open in the control circuit of the suspension damper solenoid.
An open in the solenoid low reference circuit of the suspension damper solenoid.
A short to voltage in the solenoid low reference circuit of the suspension damper solenoid.
Action Taken When the DTC Sets

The suspension damper solenoid will be disabled.
All suspension damper solenoids will be disabled.
The SERVICE RIDE CONTROL message will be displayed.
Stores a DTC C0575, C0580, C0585 or C0590 in the ESC module memory.
Conditions for Clearing the DTC

The ESC module no longer detects a problem in the low reference circuit or the control circuit of the suspension damper solenoid.
Using the scan tool.
A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
Diagnostic Aids

Important: Ignition cycle counting is used by the ESC module to detect faults in the system. The objective is to eliminate false/intermittent codes while maintaining an acceptable level of system performance. The operation of the ignition cycle counting requires that a fault condition be present for four consecutive ignition cycles before it will set the fault code and display the "SERVICE RIDE CONTROL" message. If a fault code is present (without a fault being current), the system will go into one or more degraded modes without displaying a message. Resetting the ignition cycle counter is done by clearing codes with a scan tool. Clearing codes will override ignition cycle counting for one ignition cycle. Therefore, a fault condition will set the fault code immediately if it occurs on the first ignition cycle after the codes are cleared.

If DTC C0870 or C0690 is present, repair the malfunction for these DTCs before diagnosing DTC C0575, C0580, C0585 or C0590.
It may be necessary to check Testing for Intermittent and Poor Connections.

Test Description
The numbers below refer to the step numbers on the diagnostic table.

Checks control circuit/control module.
Tests for low reference circuit of the suspension damper solenoid. The ESC module supplies ground of the suspension damper solenoid.
Verifies that the resistance of the suspension damper solenoid.
Tests the control circuit to the suspension damper solenoid for an open and short to voltage.
Tests the control circuit for a short to ground.
Replace and program the ESC module.

It is not as easy as a part. A code never identifies a bad part, just a failed system.

You need a shop to help you with this.

Roy

Yes it is. The price sounds about right if that includes the labor.

Roy

Yes, they look okay. They are not OEM but will bolt up the same as OEM.

Roy

Yes, they may not give you the ride quality, but that is why the factory ones are a lot more money.

Roy

If the pump runs and it turns off like normal, most likely all that happened is the mounting bushings have gotten hard in the cold weather and are transmitting the normal noise better, or they are deteriorated and the metal bracket is rubbing on one of the mounting bolts. Other bushings will also be harder when they are cold and they will not isolate noises very well. That is why cars make as much noise in really cold weather as our bodies do. I would not be too concerned yet unless the noise gets loud on a warmer day.